Zooming in on `bi-large' neutrino mixing with the first JUNO results

TL;DR

This paper evaluates bi-large neutrino mixing models using the latest JUNO results, analyzing their viability, testing capabilities, and implications for neutrinoless double beta decay, with some models being strongly disfavored.

Contribution

It assesses the compatibility of bi-large mixing patterns with JUNO data and explores JUNO's potential to discriminate among different models and predict CP and octant parameters.

Findings

Some bi-large mixing models are strongly disfavored by JUNO data.

JUNO can test and discriminate among various neutrino mixing schemes.

Predictions for octant and CP violation emerge from the analysis.

Abstract

The leptonic mixing matrix is examined within bi-large mixing patterns and confronted with the latest results announced by the Jiangmen Underground Neutrino Observatory (JUNO). We analyze the viability of bi large mixing schemes and assess JUNO's ability to test neutrino mixing and discriminate among different bi-large mixing patterns, some of which are strongly disfavored when compared with neutrino oscillation global-fit results. Specific octant and CP predictions emerge. Finally, we comment on the implications of JUNO's findings for neutrinoless double beta decay.